Typewriting machine



I May 23, 1933. .G; ca. some TYPEWRITING MACHINE Filed May 2, 1927 3Sheets-Sheet? l ATTURNEY WITNESSES May 23, 1933. G. a. some TYPEWRITINGMACHINE Filed May 2, 192 3 Sheets-Sheet 2 INVENTUR dgw W ATTURNEY,

W FL WITNESSES G. G. some 1,910,329 TYPEWRITING MACHINE Filed May 2,1927 5 Sheets-Sheet 3 May 23, 1933.

INVENTUR i w iii) Patented May 23, 1933 titliTD STATES ame PATT @FHZEGEORGE G. GOING, OF MIDDLETOWN, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGN-MENTS, TO REMINGTON TYPEVIEITER COMPANY, A CORPORATION OF NEW YORKTYPEWRITING MACHINE Application filed May 2, 1927. Serial No. 188,243.

My invention relates to typewrit-ing machines and more particularly topaper feed mechanism therefor.

One of the main objects of my invention is to provide simple andefficient means whereby certain of the paper feed devices may beapplied, when desired, with an increased spring force over thatordinarily applied to said devices, in order to more effectively feedcomparatively heavy or stiff work sheets.

Another object of my invention is to evenly distribute the additionalspring pressure to the paper feed devices to which it is applied inorder to effect a straight and effective feed of the work sheets.

To the above and other ends which will hereinafter appear, my inventionconsists in the features of construction, combinations of devices andarrangements of parts set forth in the following description andparticularly pointed out in the appended claims.

In the accompanying drawings wherein like reference characters designatecorresponding parts in the different views- Fig. 1 is an enlarged,detail, fore and aft, vertical sectional view of the carriage of 'atypewriting machine equipped with the devices of my invention, thesection being taken on the line 11 of Fig. 4 and looking in thedirection of the arrows at said line.

Fig. 2 is an enlarged, detail, perspective view of one of the paperfingers, shown detached.

Fig. 3 is an enlarged, detail, perspective view of the correspondingcarrier for said paper finger, shown detached.

Fig. 4 is a bottom plan view of the carriage with parts broken away andomitted.

Fig. 5 is a fragmentary, perspective View showing a part of the carriageand certain of the paper feed devices, as viewed from the front of themachine.

Fig. 6 is a fragmentary front elevation of the carriage.

Fig. 7 shows detached a group of parts that enter into paper feedingbail construction.

Fig. 8 is a fragmentary, detail, vertical, fore and aft sectional viewcorresponding in part to Fig. 1, but looking in the opposite direction,and with the parts disposed to apply the additional spring pressure tothe rear main feed rollers; the section being taken on the line 8-8 ofFig. 1 and'looking in the direction of the arrows at said line.

I have shown my invention embodied, in the resent instance, in thecarriage of a No. 6 Remington-Noiseless machine in which the inventionmay be readily incorporated with out modifying, or materiallymodifiying, the existing structural features of said machine. It shouldbe understood, however, that the invention is not restricted toembodiment in such machines, but may be employed in typewriting and likemachines generally, wherever found available.

The main paper feed rollers, in the present instance, are constructedand mounted in the manner indicated in my copending application Sr. No.180,202, filed'April 1, 1927, (now Patent No. 1,817,251, dated Aug. 4,1981) in which such construction is claimed, the claims of the presentapplication being restricted to features not disclosed in saidpreviously filed application.

In the present constructionl combine with certain of the main paper feedrollers of the construction of the aforesaid application, means whichmay be applied at will to increase the spring pressure exerted thereon,to attain certain additional advantages without, however, detractingfrom advantageous results inherent in said prior construction, as willhereinafter more clearly appear.

Only so much of a No. 6 Remington-Noiseless machine is shown as isnecessary to illustrate my invention in its embodiment therein.

The carriage comprises end plates 1 connected to a main supporting andguide bar 2 grooved on opposite sides thereof at 3 to receiveanti-friction rollers which also are received in grooved faces in theguide rails of a case shift frame, not shown. The end plates 1 arefurther united by cross bars 4, 5 and 6.

A forward spindle 7 supports a series of forward main paper feed rollers8 mounted for independent rotation thereon, said spindle being supportedin open-mouth bearings 9 in hanger arms 10. These arms are mounted forindependent pivotal movement on a pivot rod 11, supported by bracketarms 12 that project up from a bracket plate 13 se cured by screws ll tothe bar 2 of the carriage. Each hanger arm 16 is extended rearwardbeyond its pivot to provide a second arm 15 that overlies a flat camface 16 (see Fig. 1) on a hand controlled release rock shaft 17. Thisshaft is supported in bearmgs in the bracket arms 12 and in the openmouth slot of an additional bracket arm 18 (see Fig. 4:), secured to thebar 2. A cross bar 19 extends between the two hanger arms 10 and isprovided with reduced ends 20 which are received in enlarged openings 21in said arms, in order to allow .a limited extent of independent pivotalmovement between said hanger arms. One end of a comparatively heavycontractile spring 22 is connected to the cross bar 19 about midway inthe length of the bar and exerts its force through said bar on thehanger arms 10 to apply the feed rollers 8 against the platen with anevenly balanced or distributec spring pressure.

A second pair of hanger arms 23 are mounted for independent movement onthe pivot rod 11 and each has an open mouth bearing 24 in which aspindle 25 for the rear main paper feed rollers 26 is supported. Arearwardly projecting arm 23 on each hanger arm 23 extends beneath therock shaft 17 and coacts with cam face 27 on said shaft. The hanger arms23 also are connected by a cross bar 28 having reduced ends 29 receivedin enlarged openings 30 in said arms to afford a limited relativepivotal movement between said arms. Situated about midway in the lengthof the cross bar 28 and surrounding it, is a sheet metal yoke 31,apertured at its free ends as at-32 to receive an end of the spring 22.The cross head 33 of this yoke is apertured to receive freelytherethrough the stem of a screw E l, that is then threaded into ahexagonal nut 35. Opposite flat sides of this nut 35 coact with the sidearms of the yoke to prevent the nut from turning. The-inner end of thescrew 34 bears against the cross bar 28, and a turning of the screw inone direction or the other will cause a bodily adjustment of the yokeand corresponding adjustment of the end of the spring 22 connectedtherewith. This will. cause a variation of the force exerted equally bythe spring 22 on both forward and rear main feed rollers 8 and 26, andcause such force to be equally distributed on the feed rollers 01"" eachset irrespective of the position to which said yoke may be adjusted.

It is sometimes desirable to provide a considerable additional springpressure on the larly on the set of rear main feed rollers 26, as forexample when heavy or stiff work sheets or cards are to be fed aroundthe platen. In accordance with my present invention I provide for thisby a very simple, yet highly effective, means which comprises arelatively stiff sheet leaf spring 36 secured to the carriage at itsanchored end by one of the screws 14:. The free end portion of thisspring extends beneath the yoke 31 and the cross bar 28 on which it ismounted. One side edge of the spring has upwardly extending integralears or guide arms 87 spaced apart to provide an intermediate slot 38 inwhich is received a rock shaft 39. A circrnnfcrential 'roove 39 isprovided in the shaft and in which enter the inner edges of the arms 37so as to prevent an axial movement of the shaftbut permit a. relativelateral movement of the spring and sh aft towards and away from eachother. The inner free floating end of this rock shaft is flattened-toprovide an off-set enlargement or cam 40 which overlies and is supportedby the free end portion of the spring 36 and is located intermediate thespring and the yoke 31. The outer end of the rock shaft passes throughan enlarged bearing opening in a sheet metal bracket arm 41 secured tothe right-hand end plate 1 of the carriage. The rock shaft is thussupported to have a slight lateral movement at its inner end, as well asto turn in its bearin s. The outer end of the rock shaft 39 has a crankarm 12 secured thereto by a screw 12, said arm carrying a finger piece4.3 by which the shaft may be given a quarter turn from the normalposition shown in Figs. 1, el and 5, to the F lg. 8 position wher. itwill be arrested by two coasting stops -14, 45 one on the bracket ll andthe other on the crank arm 42. The position of the parts at this time isshown in 8 from i which it will be seen that cam 10 has been turned atsubstantially right angles to the position it normally occupies. Theeffect of this movement of the cam is to cause one side of it to flexthe spring 36 while the other side of the cam bears against the yoke 31.This results in the force of the flexed spring 36 being applied throughthe floating cam 40, the yoke 81 and the cross bar 28 to the hangers 23and thefeed rollers 26 carried thereby. This additional spring force isapplied to the feed rollers 26 independently of the front main feedrollers 8. which continue to be pressed against the platen, or a worksheet thereon, from the power exerted by spring 22, as before. It willbe seen that the additional force exerted by the spring is evenlydistributed on the feed rollers 26 because such force is exerted on thecross bar 28 midway in the length thereof, and for the same reason thatthe force main paper feed rollers, and more particuof the spring 22 isevenly distributed on said feed rollers. When the cam 40 is turned tothe effective F 8 position, the force of the spring 36 will be exertededgewise against the cam which is practically dead centered against thepoint of resistance. Therefore, the rock shaft 39 and cam 40 will beheld by the pressure of the spring in the actuated Fig. 8 positionindefinitely, or

until such time as the operator turns the.

rock shaft back to normal position with the aid of the finger piece 43.It will be seen that the arms or cars 37 on the spring 36 act as guidesfor the inner floating end portion of the rock shaft 39 as the cam 40 isturned into and out of effective position by the rock shaft and saidarms working in the groove 39 prevent any axial displacement of theshaft.

Referring now to the paper feed bail it will be seen that a spindle orcross bar 46 has opposite fiat sides 47. This baris received at each endin a bearing opening 48 in a suporting arm designated as a whole by thereference numeral 49, and shown in detail in Fig. 7. The verticallydisposed car 50 on each arm in which a bearing opening 48 is provided isinwardly off-set from a horizontally disposed member 51, pierced at 52to receive the stem of a headed screw 53. This screw after passing intothe opening 52 is threaded into a tapped opening 54 in the rod 46. Anupright member 55 joins the member 51 of each supporting arm 49 and hasa. lengthwise sliding connection with a companion pivoted supporting arm56. In the present instance this sliding connection is provided by apair of headed pins 57 that are received in slots 58 disposed lengthwisein the arms 56. A cut-out 59 in each pivoted arm 56 receives a lug 60extending laterally from the companion supporting arm 49 from a point atthe upper end of a cut-out 61 therein. A contractile spring 62 is hookedat one end in an opening 63 in each arm 56, and at its other end in ahole 64 in the lug 60 of the companion arm 49. Each spring 62 isreceived in the cut-outs 59 and 61 of the companion arms and is confinedsubstantially within the thickness of the metal of the two arms to whichit is connected. Each of the arms 56 is pierced at 65 to receive aheaded pivot screw 66 threaded into a tapped opening in an up wardly andforwardly projecting arm 67 on an end plate 1 of the carriage. Paperfeed devices, such as the feed rollers 68 are adjustably mounted in theusual manner along the supporting spindle 46 and rotate freely thereonin any positions to which they may be adjusted. As will be seen, moreparticularly from an inspection of Fig. 1, the feed rollers 68 coactwith the platen above the printing line, and the bail, comprising thearms 49 and 56 and the spindle 46, is pivoted at 66 forward of and abovethe printing line to swing into and out of the effective position. Asuitable catch 69 is pivoted at 70 on each end plate 1 and is forced bythe power of a spring 71 to coact with the spindle 46 and hold the bailfrom swinging from effective position.

It will be seen that when the bail is in effective position, shown inFig. 1, the arms 49 are capable of receiving a limited, rectilinear,sliding movement on the arms 56 towards and from the platen 72 andsubstantially towards and from the axis thereof. It will be seen,moreover, that the force of each of the springs 62 is exertedindependently of the other in this direction to force the feed rollers68 against the platen, and that it is unnecessary to exert a springpressure laterally against the arms of the bail to force the feedrollers against the platen and that the spring pressure applied to thefeed rollers 68 in the present instance is independent of any lateralmovement of the arms of the bail. This construction enables an evenlydistributed and effective pressure to be exerted by both feed rollers 68against a work sheet and to provide a straight feed of the work sheet.

The above described paper bail construction is not claimed herein but isclaimed in a divisional application filed by me December 17, 1927,Serial #240,734.

Referring now to the paper finger construction, and the means formounting the same, it will be seen that a sheet metal supporting bar 73is secured at its ends by screws 74 to lugs 75 on the end plates 1. Thisbar is thus supported on the carriage below the printing line, the headsof the screws 74 preferably being received in counter-sunk openings inthe face of the bar for purposes which will presently appear. Referringparticularly to Fig. 1, it will be seen that the bar 73 hassubstantially an inverted L-shape in cross section, the cross head orflange 76 thereof extending horizontally rearward from the upper edge ofthe vertically disposed portion of the bar. The bar is attached to theend plates 1 only the upright portion thereof, leaving the cross head 76free from obstruction by both end plates so that the paper fingercarriers may receive a sliding motion on and off the sup porting bar 73,as will hereinafter more clearly appear.

There are two paper fingers or marginal feed devices and carrierstherefor, and. the description of one applies to the other. Each sheetmetal paper finger 77 has a for wardly extending integral finger piece'78 at its inner edge, and struck-up ears 79 support a spindle 80 for amarginal feed roller 81 that extends through an opening 82 in the fingerand bears against the platen. Projecting from the lower end of the paperfinger are two lugs bent to provide barrels 83 to receive a pivot rod84. This rod also is received in and supported by barrel-like bearings85 of a comparatively long sheet metal carrier or slide designated as awhole by the reference numeral 86. This carrier comprises a flatpiatelik e vertically disposed portion 87 which at its upper edge isprovided with rearwardly extending horizontal projections or lugs 88bent downward and forward at their free ends, as indicated t 89, tosurround the rear edge of and embrace the flange 70 of the supportingbar, as shown in Fig- 1. These extensions or projections 88 are widelyseparated, being located at the ends of the platelike body portion 87 ofthe carrier and leaving a large intervening space betv-zcen them. Acoiled spring 90 (see Fig. 6) surrounds the pivot rod 84:, one end 91 ofthe spring bearing against the associated paper finger 77, and the otherend 02 bearing against the plate-like member 87 of the associatedcarrier. The power this spring is exerted at one end to force the member87 against the front flat face of the supporting bar, whereas the springat its other end exerts its force against the companion paper finger 77to maintain its feed roller 68 in contact with the platen or the paperthereon.

This very simple and inexpensive form of paper linger construction andmounting requires no nice fitting of the slide or car rier on itssupporting bar, and yet enables each of the paper fingers and itscarrier to be easily adjusted longitudinally of the platen without anyundue cramping or binding action of the carrier on the bar, such as isformed in many constructions heretofore employed. This freedom forsliding adjustment of the frictionally held carrier is provided, in thepresent instance, notwithstanding the finger piece 78 by which afinger77 and its carrier or slide are adjusted along the supporting bar, islocated at a point remote from the carrier where it is most convenientto the operator.

The construction also enables the fingers to be readily mounted in placeor removed without detaching the supporting bar 73 from the carriage.Thus, by turning a paper finger forward around its pivot 84 to a pointwhere it will clear the arm 67 on the adjacent end plate 1 on thecarriage, as shown in dotted lines in Fig. 1, the carrier may be forcedalong and off over the corresponding end of the supporting bar. Saidarms 67, however, will prevent an ac cinental displacement of thefingers and their carriers from the supporting bar when the parts are inuse. In a like manner the carriers and fingers may be readily mounted inplace.

The above described paper linger censtruction and the means for mountingthe same are not claimed herein but are claimed in a divisionalapplication filed by me December 20, 1928, Serial #241,328.

The means shown in the present instance for controlling the rock shaft17 to release the main feed rollers 8 and 26 is the same as disclosed inmy application Serial No. 180,202 hereinbefore referred to, although anysuitable means may be employed for this purpose. Such release mechanismincludes a tl'iree-arm lever comprising an upstanding arm 93 whichterminates in a finger piece 94. A second arm 95 of the lever is pivotedat 96 to an end plate 1 of the carriage. A third arm 97 is pivoted at 98to a depending link 99 which is pivotally connected at 100 to a crankarm 101 on an end of the rock shaft 17. A rearward movement of thelinger piece 91 turns the rock shaft 17, causing" the cams 16 and 27thereon to shift the hangers l0 and 23 to release the main feed rollers8 and 26. A quarter turn of the rock shaft 17 brings the cams thereoncrosswise of the hanger arms, and the parts including the feed rollersare held indelinitely in the released position; I

If at the time when the feed rollers 8 and 26 are released by the fingerpiece 94, the cam should be in the Fig. 8 position to apply the extraforce of the spring 36, this will not interfere with the release of thefeed rollers 8 and 26. The action of the release key 94 will merelyresult in effecting bodily downward movement of the floating cam 40,causing a furtherllexing of the spring 36 while the hangers 10 and 23are moved away from the platen, thus releasing both sets of feedrollers. When the key 94 is returned, the feed rollers 8 and 26 will beapplied as before, and the spring 86 will still exert its extra pressureon the rollers 26.

No mention has as yet been made ofthe combined paper table and apron102. This member is constructed, mounted and actuated in the same manneras indicated in my hereinbeforementioned appl'cation, being guided bylinks 103 each'pivoted at one end tothe member 102, as indicated at 10and at the other end on a pivot screw 105 threaded into a tapped openingin an end platol. Each end of the member 102 has a forked lug-106 thatstraddles a pin 107 on the adjacent end plate 1 to further guide thepaper apron. Rubber rollers 108 on the spindles 7 and support thecombined paper table and apron and control its movement towards and fromthe platen. 7

From the foregoing description it will be seen that the entire paperfeed mechanism is simple, compact, inexpensive to manufacture andassemble, is highly efiicient in use and may readily be embodiedinexisting machines without modifying, or materially modifying, theother structural features thereofa.

Various changes may be made in the construction, and parts thereof maybe employed without others, without departing from my invention as it isdefined in the accompanying claims.

What I claim as new and desire by Letters Patent, is

1. The combination of a platen, a paper feed roller coacting therewith,spring means for furnishing the pressure ordinarily required forpressing said feed roller against the platen to feed the paper, aseparate auxiliary spring normally substantially ineffective, and handcontrolled means shiftable at will into and out of effective positionfor applying at will the additional effective force of said separatespring to said feed roller and applying the latter against the platenwith a spring pressure in excess of that normally required and appliedby said first mentioned spring means to feed the paper.

2. The combination of a platen, two sets of paper feed rollers, springmeans for pressing said feed rollers against the platen, and separatemeans shiftable at will into and out of effective position and when inthe effective position forcing one set only of said feed rollers againstthe platen with a spring pressure in excess of that applied by saidfirst mentioned spring means.

3. The combination of a platen, a forward set of main paper feed rollersbeneath the platen, a rear set of main paper feed rollers beneath theplaten, spring means for pressing said forward and rear sets of feedrollers against the platen, and separatemeans operable at will on therear set only of said feed rollers and shiftable at will into and out ofefiective position and when in the effective position causing a force tobe exerted by the rear set of feed rollers against the platen inaddition to and in excess of the pressure exerted by said firstmentioned spring means.

4. The combination of a platen, a paper feedroller coacting therewith,spring means for pressing said feed roller against the platen, andseparate means operable at will for forcing said feed roller against theplaten with a spring pressure in excess of that applied by said springmeans, said sep arate means including a finger piece, a cam intermediatesaid finger piece and said rollers, and a relatively heavy springagainst which said cam acts for exerting an additional force againstsaid rollers.

5. The combination of a platen, a set of paper feed rollers,independently movable hangers by which said feed rollers are supported,a cross bar which connects said hangers so that a limited extent ofrelative movement may be effected between them and thus enable an evenlyapplied pressure to to secure be exerted by the feed rollers against theplaten, a spring, and a hand controlled floating cam intermediate saidspring and cross bar and coacting with the latter intermediate the endsthereof to apply the feed rollers to the platen from the force of saidspring exerted through the cam.

6. The combination of a platen, a set of paper feed rollers,independently movable hangers by which said feed rollers are supported,a cross bar which connects said hangers so that a limited extent ofrelative movement may be effected between them and thus enable an evenlyapplied pressure to be exerted by the eed rollers against the platen, aspring, a hand controlled floating cam between said cross bar and springthat coacts with the cross bar intermediate the ends thereof to applythe feed rollers to the platen from the force of said spring exertedthrough the cam, and spring means for exerting an evenly appliedpressure by the feed rollers against the platen independently of thepressure exerted through said cam.

7. The combination of a platen, a set of paper feed rollers,independently movable hangers by which said feed rollers are supported,a cross bar which connects said hangers so that a limited extent ofrelative movement may be effected between them and thus enable an evenlyappliedpressure to be exerted by the feed rollers against the plat-- en,a spring connected to said cross bar in termediate ends to apply anevenly distributed spring pressure by said feed rollers against theplaten, releasing means for moving the feed rollers away from the platenagainst the force of said spring, a second relatively heavy spring, anda separate hand controlled cam that coacts with said cross barintermediate the ends thereof and with said second spring to apply thefeed rollers to the platen with an even pressure in excess of thepressure exerted by said first mentioned sprin 8. The combination of aplaten, a for ward set of main paper feed rollers beneath the platen, arear set of main paper feed rollers beneath the platen, spring means,means for applying the force of said spring means so as to exert anevenly distributed pressure by the feed. rollers of each set against theplaten, and separate means for applying an additional and evenlydistributed spring pressure by the feed rollers of one set only againstthe platen, such additional pressure being in excess of the pressureapplied by said first mentioned spring means.

9. The combination of a platen, a forward set of main paper feed rollersbeneath the platen, a rear set of main paper feed rollers beneath theplaten, spring means, means for applying the force of said spring meansso as to exert an evenly distributed pressure the feed rollers of eachset against the platen, and a separately controlled and independentlyactuated means for forcing the feed rollers oft-he rear set against theplaten with an additional and evenly distributed spring pressure inexcess of the pressure exerted by said first mentioned spring means andwhile the feed rollers of the front set remain unaffected by saidindependently actuated means.

10. The combination of a platen, a set of front main paper feed rollers,independently movable hangers by which said feed rollers are supported,'a cross bar which connects said hangers so that a limited extent ofrelative movement between them may be effected and thus enable an evenlyapplied pressure to be exerted by said feed rollers against the platen,a second'set of rear main paper feed rollers mounted in the same manneras said front set of feed rollers, a spring connected to the cross barsfor the two sets of feed rollers intermediate the ends of said bars, andseparate means operable at will for applying an additional springpressure by the feed rollers of the rear set against the platen. v

11. The combination of a platen, a set of front main paper feed rollers,independently movable hangers by which said feed rollers are supported,a cross bar which connects said hangers so that a limited extent ofrelative movement between them may be efiected and thus enable an evenlyapplied pressure to be exerted by said feed rollers against the platen,a second set of rear main paper feed rollers mounted in the same manneras said front set of feed rollers, a spring connected to the cross barsfor the two sets of feed rollers intermediate the ends of said bars, andhand controlled means including a cam operative at will on the cross barfor said rear set of feed rollers intermediate the ends of such bar forexerting an additional and evenlydistributed spring pressure by the feedrollers of the rear set against the platen, the additional pressure ofthe rear set of feed rollers being in excess of that applied therebyfrom the force of said first mentioned spring.

12. The combination of a platen, a set of front main paper feed rollers,independently movable hangers by which said feed rollers are supported,a cross bar which connects said hangers so that a limited extent ofrelative movement between them may be effected and thus enable an evenlyapplied pressure to be exerted by said feed rollers against the platen,a second set of rear main paper feed rollers mounted in the same manneras said front set of feed rollers, a spring connected to the cross barsfor the two sets of feed rollers intermediate the ends of said bars, asecond spring, a hand controlled rock-shaft, and a cam carried by saidrock-shaft and cooperative with said second spring and with one of saidcross bars to exert an additlonal sprln g pressure on the assoc ated setof feed rollers and force the latterwith an additional pres- N

